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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<span class="sourceLineNo">003</span> * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<span class="sourceLineNo">007</span> * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a>
<span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a>
<span class="sourceLineNo">016</span> */<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.commons.io.file;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.io.File;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.io.InputStream;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.io.UncheckedIOException;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.net.URI;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.net.URL;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.nio.file.CopyOption;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.nio.file.DirectoryStream;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.nio.file.FileVisitOption;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.nio.file.FileVisitResult;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.nio.file.FileVisitor;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.nio.file.Files;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.nio.file.LinkOption;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.nio.file.NoSuchFileException;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import java.nio.file.NotDirectoryException;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import java.nio.file.OpenOption;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import java.nio.file.Path;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import java.nio.file.Paths;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import java.nio.file.attribute.AclEntry;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import java.nio.file.attribute.AclFileAttributeView;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import java.nio.file.attribute.BasicFileAttributes;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import java.nio.file.attribute.DosFileAttributeView;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import java.nio.file.attribute.FileAttribute;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import java.nio.file.attribute.PosixFileAttributeView;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import java.nio.file.attribute.PosixFileAttributes;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import java.nio.file.attribute.PosixFilePermission;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import java.util.ArrayList;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import java.util.Arrays;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import java.util.Collection;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import java.util.Collections;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import java.util.Comparator;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import java.util.EnumSet;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import java.util.List;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import java.util.Objects;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import java.util.Set;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import java.util.stream.Collector;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import java.util.stream.Collectors;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import java.util.stream.Stream;<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>import org.apache.commons.io.IOExceptionList;<a name="line.59"></a>
<span class="sourceLineNo">060</span>import org.apache.commons.io.IOUtils;<a name="line.60"></a>
<span class="sourceLineNo">061</span>import org.apache.commons.io.file.Counters.PathCounters;<a name="line.61"></a>
<span class="sourceLineNo">062</span>import org.apache.commons.io.filefilter.IOFileFilter;<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span>/**<a name="line.64"></a>
<span class="sourceLineNo">065</span> * NIO Path utilities.<a name="line.65"></a>
<span class="sourceLineNo">066</span> *<a name="line.66"></a>
<span class="sourceLineNo">067</span> * @since 2.7<a name="line.67"></a>
<span class="sourceLineNo">068</span> */<a name="line.68"></a>
<span class="sourceLineNo">069</span>public final class PathUtils {<a name="line.69"></a>
<span class="sourceLineNo">070</span><a name="line.70"></a>
<span class="sourceLineNo">071</span>    /**<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * Private worker/holder that computes and tracks relative path names and their equality. We reuse the sorted<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * relative lists when comparing directories.<a name="line.73"></a>
<span class="sourceLineNo">074</span>     */<a name="line.74"></a>
<span class="sourceLineNo">075</span>    private static class RelativeSortedPaths {<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span>        final boolean equals;<a name="line.77"></a>
<span class="sourceLineNo">078</span>        // final List&lt;Path&gt; relativeDirList1; // might need later?<a name="line.78"></a>
<span class="sourceLineNo">079</span>        // final List&lt;Path&gt; relativeDirList2; // might need later?<a name="line.79"></a>
<span class="sourceLineNo">080</span>        final List&lt;Path&gt; relativeFileList1;<a name="line.80"></a>
<span class="sourceLineNo">081</span>        final List&lt;Path&gt; relativeFileList2;<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>        /**<a name="line.83"></a>
<span class="sourceLineNo">084</span>         * Constructs and initializes a new instance by accumulating directory and file info.<a name="line.84"></a>
<span class="sourceLineNo">085</span>         *<a name="line.85"></a>
<span class="sourceLineNo">086</span>         * @param dir1 First directory to compare.<a name="line.86"></a>
<span class="sourceLineNo">087</span>         * @param dir2 Seconds directory to compare.<a name="line.87"></a>
<span class="sourceLineNo">088</span>         * @param maxDepth See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.88"></a>
<span class="sourceLineNo">089</span>         * @param linkOptions Options indicating how symbolic links are handled.<a name="line.89"></a>
<span class="sourceLineNo">090</span>         * @param fileVisitOptions See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.90"></a>
<span class="sourceLineNo">091</span>         * @throws IOException if an I/O error is thrown by a visitor method.<a name="line.91"></a>
<span class="sourceLineNo">092</span>         */<a name="line.92"></a>
<span class="sourceLineNo">093</span>        private RelativeSortedPaths(final Path dir1, final Path dir2, final int maxDepth,<a name="line.93"></a>
<span class="sourceLineNo">094</span>            final LinkOption[] linkOptions, final FileVisitOption[] fileVisitOptions) throws IOException {<a name="line.94"></a>
<span class="sourceLineNo">095</span>            final List&lt;Path&gt; tmpRelativeDirList1;<a name="line.95"></a>
<span class="sourceLineNo">096</span>            final List&lt;Path&gt; tmpRelativeDirList2;<a name="line.96"></a>
<span class="sourceLineNo">097</span>            List&lt;Path&gt; tmpRelativeFileList1 = null;<a name="line.97"></a>
<span class="sourceLineNo">098</span>            List&lt;Path&gt; tmpRelativeFileList2 = null;<a name="line.98"></a>
<span class="sourceLineNo">099</span>            if (dir1 == null &amp;&amp; dir2 == null) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>                equals = true;<a name="line.100"></a>
<span class="sourceLineNo">101</span>            } else if (dir1 == null ^ dir2 == null) {<a name="line.101"></a>
<span class="sourceLineNo">102</span>                equals = false;<a name="line.102"></a>
<span class="sourceLineNo">103</span>            } else {<a name="line.103"></a>
<span class="sourceLineNo">104</span>                final boolean parentDirNotExists1 = Files.notExists(dir1, linkOptions);<a name="line.104"></a>
<span class="sourceLineNo">105</span>                final boolean parentDirNotExists2 = Files.notExists(dir2, linkOptions);<a name="line.105"></a>
<span class="sourceLineNo">106</span>                if (parentDirNotExists1 || parentDirNotExists2) {<a name="line.106"></a>
<span class="sourceLineNo">107</span>                    equals = parentDirNotExists1 &amp;&amp; parentDirNotExists2;<a name="line.107"></a>
<span class="sourceLineNo">108</span>                } else {<a name="line.108"></a>
<span class="sourceLineNo">109</span>                    final AccumulatorPathVisitor visitor1 = accumulate(dir1, maxDepth, fileVisitOptions);<a name="line.109"></a>
<span class="sourceLineNo">110</span>                    final AccumulatorPathVisitor visitor2 = accumulate(dir2, maxDepth, fileVisitOptions);<a name="line.110"></a>
<span class="sourceLineNo">111</span>                    if (visitor1.getDirList().size() != visitor2.getDirList().size()<a name="line.111"></a>
<span class="sourceLineNo">112</span>                        || visitor1.getFileList().size() != visitor2.getFileList().size()) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>                        equals = false;<a name="line.113"></a>
<span class="sourceLineNo">114</span>                    } else {<a name="line.114"></a>
<span class="sourceLineNo">115</span>                        tmpRelativeDirList1 = visitor1.relativizeDirectories(dir1, true, null);<a name="line.115"></a>
<span class="sourceLineNo">116</span>                        tmpRelativeDirList2 = visitor2.relativizeDirectories(dir2, true, null);<a name="line.116"></a>
<span class="sourceLineNo">117</span>                        if (!tmpRelativeDirList1.equals(tmpRelativeDirList2)) {<a name="line.117"></a>
<span class="sourceLineNo">118</span>                            equals = false;<a name="line.118"></a>
<span class="sourceLineNo">119</span>                        } else {<a name="line.119"></a>
<span class="sourceLineNo">120</span>                            tmpRelativeFileList1 = visitor1.relativizeFiles(dir1, true, null);<a name="line.120"></a>
<span class="sourceLineNo">121</span>                            tmpRelativeFileList2 = visitor2.relativizeFiles(dir2, true, null);<a name="line.121"></a>
<span class="sourceLineNo">122</span>                            equals = tmpRelativeFileList1.equals(tmpRelativeFileList2);<a name="line.122"></a>
<span class="sourceLineNo">123</span>                        }<a name="line.123"></a>
<span class="sourceLineNo">124</span>                    }<a name="line.124"></a>
<span class="sourceLineNo">125</span>                }<a name="line.125"></a>
<span class="sourceLineNo">126</span>            }<a name="line.126"></a>
<span class="sourceLineNo">127</span>            // relativeDirList1 = tmpRelativeDirList1;<a name="line.127"></a>
<span class="sourceLineNo">128</span>            // relativeDirList2 = tmpRelativeDirList2;<a name="line.128"></a>
<span class="sourceLineNo">129</span>            relativeFileList1 = tmpRelativeFileList1;<a name="line.129"></a>
<span class="sourceLineNo">130</span>            relativeFileList2 = tmpRelativeFileList2;<a name="line.130"></a>
<span class="sourceLineNo">131</span>        }<a name="line.131"></a>
<span class="sourceLineNo">132</span>    }<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span>    /**<a name="line.134"></a>
<span class="sourceLineNo">135</span>     * Empty {@link CopyOption} array.<a name="line.135"></a>
<span class="sourceLineNo">136</span>     *<a name="line.136"></a>
<span class="sourceLineNo">137</span>     * @since 2.8.0<a name="line.137"></a>
<span class="sourceLineNo">138</span>     */<a name="line.138"></a>
<span class="sourceLineNo">139</span>    public static final CopyOption[] EMPTY_COPY_OPTIONS = {};<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span>    /**<a name="line.141"></a>
<span class="sourceLineNo">142</span>     * Empty {@link LinkOption} array.<a name="line.142"></a>
<span class="sourceLineNo">143</span>     *<a name="line.143"></a>
<span class="sourceLineNo">144</span>     * @since 2.8.0<a name="line.144"></a>
<span class="sourceLineNo">145</span>     */<a name="line.145"></a>
<span class="sourceLineNo">146</span>    public static final DeleteOption[] EMPTY_DELETE_OPTION_ARRAY = {};<a name="line.146"></a>
<span class="sourceLineNo">147</span><a name="line.147"></a>
<span class="sourceLineNo">148</span>    /**<a name="line.148"></a>
<span class="sourceLineNo">149</span>     * Empty {@link FileVisitOption} array.<a name="line.149"></a>
<span class="sourceLineNo">150</span>     */<a name="line.150"></a>
<span class="sourceLineNo">151</span>    public static final FileVisitOption[] EMPTY_FILE_VISIT_OPTION_ARRAY = {};<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span>    /**<a name="line.153"></a>
<span class="sourceLineNo">154</span>     * Empty {@link LinkOption} array.<a name="line.154"></a>
<span class="sourceLineNo">155</span>     */<a name="line.155"></a>
<span class="sourceLineNo">156</span>    public static final LinkOption[] EMPTY_LINK_OPTION_ARRAY = {};<a name="line.156"></a>
<span class="sourceLineNo">157</span><a name="line.157"></a>
<span class="sourceLineNo">158</span>    /**<a name="line.158"></a>
<span class="sourceLineNo">159</span>     * {@link LinkOption} array for {@link LinkOption#NOFOLLOW_LINKS}.<a name="line.159"></a>
<span class="sourceLineNo">160</span>     *<a name="line.160"></a>
<span class="sourceLineNo">161</span>     * @since 2.9.0<a name="line.161"></a>
<span class="sourceLineNo">162</span>     */<a name="line.162"></a>
<span class="sourceLineNo">163</span>    public static final LinkOption[] NOFOLLOW_LINK_OPTION_ARRAY = {LinkOption.NOFOLLOW_LINKS};<a name="line.163"></a>
<span class="sourceLineNo">164</span><a name="line.164"></a>
<span class="sourceLineNo">165</span>    /**<a name="line.165"></a>
<span class="sourceLineNo">166</span>     * Empty {@link OpenOption} array.<a name="line.166"></a>
<span class="sourceLineNo">167</span>     */<a name="line.167"></a>
<span class="sourceLineNo">168</span>    public static final OpenOption[] EMPTY_OPEN_OPTION_ARRAY = {};<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span>    /**<a name="line.170"></a>
<span class="sourceLineNo">171</span>     * Empty {@link Path} array.<a name="line.171"></a>
<span class="sourceLineNo">172</span>     *<a name="line.172"></a>
<span class="sourceLineNo">173</span>     * @since 2.9.0<a name="line.173"></a>
<span class="sourceLineNo">174</span>     */<a name="line.174"></a>
<span class="sourceLineNo">175</span>    public static final Path[] EMPTY_PATH_ARRAY = {};<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span>    /**<a name="line.177"></a>
<span class="sourceLineNo">178</span>     * Accumulates file tree information in a {@link AccumulatorPathVisitor}.<a name="line.178"></a>
<span class="sourceLineNo">179</span>     *<a name="line.179"></a>
<span class="sourceLineNo">180</span>     * @param directory The directory to accumulate information.<a name="line.180"></a>
<span class="sourceLineNo">181</span>     * @param maxDepth See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.181"></a>
<span class="sourceLineNo">182</span>     * @param fileVisitOptions See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.182"></a>
<span class="sourceLineNo">183</span>     * @throws IOException if an I/O error is thrown by a visitor method.<a name="line.183"></a>
<span class="sourceLineNo">184</span>     * @return file tree information.<a name="line.184"></a>
<span class="sourceLineNo">185</span>     */<a name="line.185"></a>
<span class="sourceLineNo">186</span>    private static AccumulatorPathVisitor accumulate(final Path directory, final int maxDepth,<a name="line.186"></a>
<span class="sourceLineNo">187</span>        final FileVisitOption[] fileVisitOptions) throws IOException {<a name="line.187"></a>
<span class="sourceLineNo">188</span>        return visitFileTree(AccumulatorPathVisitor.withLongCounters(), directory,<a name="line.188"></a>
<span class="sourceLineNo">189</span>            toFileVisitOptionSet(fileVisitOptions), maxDepth);<a name="line.189"></a>
<span class="sourceLineNo">190</span>    }<a name="line.190"></a>
<span class="sourceLineNo">191</span><a name="line.191"></a>
<span class="sourceLineNo">192</span>    /**<a name="line.192"></a>
<span class="sourceLineNo">193</span>     * Cleans a directory including sub-directories without deleting directories.<a name="line.193"></a>
<span class="sourceLineNo">194</span>     *<a name="line.194"></a>
<span class="sourceLineNo">195</span>     * @param directory directory to clean.<a name="line.195"></a>
<span class="sourceLineNo">196</span>     * @return The visitation path counters.<a name="line.196"></a>
<span class="sourceLineNo">197</span>     * @throws IOException if an I/O error is thrown by a visitor method.<a name="line.197"></a>
<span class="sourceLineNo">198</span>     */<a name="line.198"></a>
<span class="sourceLineNo">199</span>    public static PathCounters cleanDirectory(final Path directory) throws IOException {<a name="line.199"></a>
<span class="sourceLineNo">200</span>        return cleanDirectory(directory, EMPTY_DELETE_OPTION_ARRAY);<a name="line.200"></a>
<span class="sourceLineNo">201</span>    }<a name="line.201"></a>
<span class="sourceLineNo">202</span><a name="line.202"></a>
<span class="sourceLineNo">203</span>    /**<a name="line.203"></a>
<span class="sourceLineNo">204</span>     * Cleans a directory including sub-directories without deleting directories.<a name="line.204"></a>
<span class="sourceLineNo">205</span>     *<a name="line.205"></a>
<span class="sourceLineNo">206</span>     * @param directory directory to clean.<a name="line.206"></a>
<span class="sourceLineNo">207</span>     * @param deleteOptions How to handle deletion.<a name="line.207"></a>
<span class="sourceLineNo">208</span>     * @return The visitation path counters.<a name="line.208"></a>
<span class="sourceLineNo">209</span>     * @throws IOException if an I/O error is thrown by a visitor method.<a name="line.209"></a>
<span class="sourceLineNo">210</span>     * @since 2.8.0<a name="line.210"></a>
<span class="sourceLineNo">211</span>     */<a name="line.211"></a>
<span class="sourceLineNo">212</span>    public static PathCounters cleanDirectory(final Path directory, final DeleteOption... deleteOptions)<a name="line.212"></a>
<span class="sourceLineNo">213</span>        throws IOException {<a name="line.213"></a>
<span class="sourceLineNo">214</span>        return visitFileTree(new CleaningPathVisitor(Counters.longPathCounters(), deleteOptions), directory)<a name="line.214"></a>
<span class="sourceLineNo">215</span>            .getPathCounters();<a name="line.215"></a>
<span class="sourceLineNo">216</span>    }<a name="line.216"></a>
<span class="sourceLineNo">217</span><a name="line.217"></a>
<span class="sourceLineNo">218</span>    /**<a name="line.218"></a>
<span class="sourceLineNo">219</span>     * Copies a directory to another directory.<a name="line.219"></a>
<span class="sourceLineNo">220</span>     *<a name="line.220"></a>
<span class="sourceLineNo">221</span>     * @param sourceDirectory The source directory.<a name="line.221"></a>
<span class="sourceLineNo">222</span>     * @param targetDirectory The target directory.<a name="line.222"></a>
<span class="sourceLineNo">223</span>     * @param copyOptions Specifies how the copying should be done.<a name="line.223"></a>
<span class="sourceLineNo">224</span>     * @return The visitation path counters.<a name="line.224"></a>
<span class="sourceLineNo">225</span>     * @throws IOException if an I/O error is thrown by a visitor method.<a name="line.225"></a>
<span class="sourceLineNo">226</span>     */<a name="line.226"></a>
<span class="sourceLineNo">227</span>    public static PathCounters copyDirectory(final Path sourceDirectory, final Path targetDirectory,<a name="line.227"></a>
<span class="sourceLineNo">228</span>        final CopyOption... copyOptions) throws IOException {<a name="line.228"></a>
<span class="sourceLineNo">229</span>        final Path absoluteSource = sourceDirectory.toAbsolutePath();<a name="line.229"></a>
<span class="sourceLineNo">230</span>        return visitFileTree(<a name="line.230"></a>
<span class="sourceLineNo">231</span>            new CopyDirectoryVisitor(Counters.longPathCounters(), absoluteSource, targetDirectory, copyOptions),<a name="line.231"></a>
<span class="sourceLineNo">232</span>            absoluteSource).getPathCounters();<a name="line.232"></a>
<span class="sourceLineNo">233</span>    }<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span>    /**<a name="line.235"></a>
<span class="sourceLineNo">236</span>     * Copies a URL to a directory.<a name="line.236"></a>
<span class="sourceLineNo">237</span>     *<a name="line.237"></a>
<span class="sourceLineNo">238</span>     * @param sourceFile The source URL.<a name="line.238"></a>
<span class="sourceLineNo">239</span>     * @param targetFile The target file.<a name="line.239"></a>
<span class="sourceLineNo">240</span>     * @param copyOptions Specifies how the copying should be done.<a name="line.240"></a>
<span class="sourceLineNo">241</span>     * @return The target file<a name="line.241"></a>
<span class="sourceLineNo">242</span>     * @throws IOException if an I/O error occurs.<a name="line.242"></a>
<span class="sourceLineNo">243</span>     * @see Files#copy(InputStream, Path, CopyOption...)<a name="line.243"></a>
<span class="sourceLineNo">244</span>     */<a name="line.244"></a>
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<span class="sourceLineNo">287</span>     * Counts aspects of a directory including sub-directories.<a name="line.287"></a>
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<span class="sourceLineNo">289</span>     * @param directory directory to delete.<a name="line.289"></a>
<span class="sourceLineNo">290</span>     * @return The visitor used to count the given directory.<a name="line.290"></a>
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<span class="sourceLineNo">300</span>     * @param path The path to a file (or directory).<a name="line.300"></a>
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<span class="sourceLineNo">318</span>     *<a name="line.318"></a>
<span class="sourceLineNo">319</span>     * @since 2.9.0<a name="line.319"></a>
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<span class="sourceLineNo">327</span>     * &lt;p&gt;<a name="line.327"></a>
<span class="sourceLineNo">328</span>     * The difference between File.delete() and this method are:<a name="line.328"></a>
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<span class="sourceLineNo">495</span>     * Compares the file sets of two Paths to determine if they are equal or not while considering file contents. The<a name="line.495"></a>
<span class="sourceLineNo">496</span>     * comparison includes all files in all sub-directories.<a name="line.496"></a>
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<span class="sourceLineNo">510</span>     * comparison includes all files in all sub-directories.<a name="line.510"></a>
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<span class="sourceLineNo">516</span>     * @param fileVisitOption options to configure traversal.<a name="line.516"></a>
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<span class="sourceLineNo">947</span>     * Converts an array of {@link FileVisitOption} to a {@link Set}.<a name="line.947"></a>
<span class="sourceLineNo">948</span>     *<a name="line.948"></a>
<span class="sourceLineNo">949</span>     * @param fileVisitOptions input array.<a name="line.949"></a>
<span class="sourceLineNo">950</span>     * @return a new Set.<a name="line.950"></a>
<span class="sourceLineNo">951</span>     */<a name="line.951"></a>
<span class="sourceLineNo">952</span>    static Set&lt;FileVisitOption&gt; toFileVisitOptionSet(final FileVisitOption... fileVisitOptions) {<a name="line.952"></a>
<span class="sourceLineNo">953</span>        return fileVisitOptions == null ? EnumSet.noneOf(FileVisitOption.class)<a name="line.953"></a>
<span class="sourceLineNo">954</span>            : Stream.of(fileVisitOptions).collect(Collectors.toSet());<a name="line.954"></a>
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<span class="sourceLineNo">956</span><a name="line.956"></a>
<span class="sourceLineNo">957</span>    /**<a name="line.957"></a>
<span class="sourceLineNo">958</span>     * Performs {@link Files#walkFileTree(Path,FileVisitor)} and returns the given visitor.<a name="line.958"></a>
<span class="sourceLineNo">959</span>     *<a name="line.959"></a>
<span class="sourceLineNo">960</span>     * Note that {@link Files#walkFileTree(Path,FileVisitor)} returns the given path.<a name="line.960"></a>
<span class="sourceLineNo">961</span>     *<a name="line.961"></a>
<span class="sourceLineNo">962</span>     * @param visitor See {@link Files#walkFileTree(Path,FileVisitor)}.<a name="line.962"></a>
<span class="sourceLineNo">963</span>     * @param directory See {@link Files#walkFileTree(Path,FileVisitor)}.<a name="line.963"></a>
<span class="sourceLineNo">964</span>     * @param &lt;T&gt; See {@link Files#walkFileTree(Path,FileVisitor)}.<a name="line.964"></a>
<span class="sourceLineNo">965</span>     * @return the given visitor.<a name="line.965"></a>
<span class="sourceLineNo">966</span>     *<a name="line.966"></a>
<span class="sourceLineNo">967</span>     * @throws IOException if an I/O error is thrown by a visitor method<a name="line.967"></a>
<span class="sourceLineNo">968</span>     */<a name="line.968"></a>
<span class="sourceLineNo">969</span>    public static &lt;T extends FileVisitor&lt;? super Path&gt;&gt; T visitFileTree(final T visitor, final Path directory)<a name="line.969"></a>
<span class="sourceLineNo">970</span>        throws IOException {<a name="line.970"></a>
<span class="sourceLineNo">971</span>        Files.walkFileTree(directory, visitor);<a name="line.971"></a>
<span class="sourceLineNo">972</span>        return visitor;<a name="line.972"></a>
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<span class="sourceLineNo">974</span><a name="line.974"></a>
<span class="sourceLineNo">975</span>    /**<a name="line.975"></a>
<span class="sourceLineNo">976</span>     * Performs {@link Files#walkFileTree(Path,FileVisitor)} and returns the given visitor.<a name="line.976"></a>
<span class="sourceLineNo">977</span>     *<a name="line.977"></a>
<span class="sourceLineNo">978</span>     * Note that {@link Files#walkFileTree(Path,FileVisitor)} returns the given path.<a name="line.978"></a>
<span class="sourceLineNo">979</span>     *<a name="line.979"></a>
<span class="sourceLineNo">980</span>     * @param start See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.980"></a>
<span class="sourceLineNo">981</span>     * @param options See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.981"></a>
<span class="sourceLineNo">982</span>     * @param maxDepth See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.982"></a>
<span class="sourceLineNo">983</span>     * @param visitor See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.983"></a>
<span class="sourceLineNo">984</span>     * @param &lt;T&gt; See {@link Files#walkFileTree(Path,Set,int,FileVisitor)}.<a name="line.984"></a>
<span class="sourceLineNo">985</span>     * @return the given visitor.<a name="line.985"></a>
<span class="sourceLineNo">986</span>     *<a name="line.986"></a>
<span class="sourceLineNo">987</span>     * @throws IOException if an I/O error is thrown by a visitor method<a name="line.987"></a>
<span class="sourceLineNo">988</span>     */<a name="line.988"></a>
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<span class="sourceLineNo">990</span>        final Set&lt;FileVisitOption&gt; options, final int maxDepth) throws IOException {<a name="line.990"></a>
<span class="sourceLineNo">991</span>        Files.walkFileTree(start, options, maxDepth, visitor);<a name="line.991"></a>
<span class="sourceLineNo">992</span>        return visitor;<a name="line.992"></a>
<span class="sourceLineNo">993</span>    }<a name="line.993"></a>
<span class="sourceLineNo">994</span><a name="line.994"></a>
<span class="sourceLineNo">995</span>    /**<a name="line.995"></a>
<span class="sourceLineNo">996</span>     * Performs {@link Files#walkFileTree(Path,FileVisitor)} and returns the given visitor.<a name="line.996"></a>
<span class="sourceLineNo">997</span>     *<a name="line.997"></a>
<span class="sourceLineNo">998</span>     * Note that {@link Files#walkFileTree(Path,FileVisitor)} returns the given path.<a name="line.998"></a>
<span class="sourceLineNo">999</span>     *<a name="line.999"></a>
<span class="sourceLineNo">1000</span>     * @param visitor See {@link Files#walkFileTree(Path,FileVisitor)}.<a name="line.1000"></a>
<span class="sourceLineNo">1001</span>     * @param first See {@link Paths#get(String,String[])}.<a name="line.1001"></a>
<span class="sourceLineNo">1002</span>     * @param more See {@link Paths#get(String,String[])}.<a name="line.1002"></a>
<span class="sourceLineNo">1003</span>     * @param &lt;T&gt; See {@link Files#walkFileTree(Path,FileVisitor)}.<a name="line.1003"></a>
<span class="sourceLineNo">1004</span>     * @return the given visitor.<a name="line.1004"></a>
<span class="sourceLineNo">1005</span>     *<a name="line.1005"></a>
<span class="sourceLineNo">1006</span>     * @throws IOException if an I/O error is thrown by a visitor method<a name="line.1006"></a>
<span class="sourceLineNo">1007</span>     */<a name="line.1007"></a>
<span class="sourceLineNo">1008</span>    public static &lt;T extends FileVisitor&lt;? super Path&gt;&gt; T visitFileTree(final T visitor, final String first,<a name="line.1008"></a>
<span class="sourceLineNo">1009</span>        final String... more) throws IOException {<a name="line.1009"></a>
<span class="sourceLineNo">1010</span>        return visitFileTree(visitor, Paths.get(first, more));<a name="line.1010"></a>
<span class="sourceLineNo">1011</span>    }<a name="line.1011"></a>
<span class="sourceLineNo">1012</span><a name="line.1012"></a>
<span class="sourceLineNo">1013</span>    /**<a name="line.1013"></a>
<span class="sourceLineNo">1014</span>     * Performs {@link Files#walkFileTree(Path,FileVisitor)} and returns the given visitor.<a name="line.1014"></a>
<span class="sourceLineNo">1015</span>     *<a name="line.1015"></a>
<span class="sourceLineNo">1016</span>     * Note that {@link Files#walkFileTree(Path,FileVisitor)} returns the given path.<a name="line.1016"></a>
<span class="sourceLineNo">1017</span>     *<a name="line.1017"></a>
<span class="sourceLineNo">1018</span>     * @param visitor See {@link Files#walkFileTree(Path,FileVisitor)}.<a name="line.1018"></a>
<span class="sourceLineNo">1019</span>     * @param uri See {@link Paths#get(URI)}.<a name="line.1019"></a>
<span class="sourceLineNo">1020</span>     * @param &lt;T&gt; See {@link Files#walkFileTree(Path,FileVisitor)}.<a name="line.1020"></a>
<span class="sourceLineNo">1021</span>     * @return the given visitor.<a name="line.1021"></a>
<span class="sourceLineNo">1022</span>     *<a name="line.1022"></a>
<span class="sourceLineNo">1023</span>     * @throws IOException if an I/O error is thrown by a visitor method<a name="line.1023"></a>
<span class="sourceLineNo">1024</span>     */<a name="line.1024"></a>
<span class="sourceLineNo">1025</span>    public static &lt;T extends FileVisitor&lt;? super Path&gt;&gt; T visitFileTree(final T visitor, final URI uri)<a name="line.1025"></a>
<span class="sourceLineNo">1026</span>        throws IOException {<a name="line.1026"></a>
<span class="sourceLineNo">1027</span>        return visitFileTree(visitor, Paths.get(uri));<a name="line.1027"></a>
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<span class="sourceLineNo">1029</span><a name="line.1029"></a>
<span class="sourceLineNo">1030</span>    /**<a name="line.1030"></a>
<span class="sourceLineNo">1031</span>     * Returns a stream of filtered paths.<a name="line.1031"></a>
<span class="sourceLineNo">1032</span>     *<a name="line.1032"></a>
<span class="sourceLineNo">1033</span>     * @param start the start path<a name="line.1033"></a>
<span class="sourceLineNo">1034</span>     * @param pathFilter the path filter<a name="line.1034"></a>
<span class="sourceLineNo">1035</span>     * @param maxDepth the maximum depth of directories to walk.<a name="line.1035"></a>
<span class="sourceLineNo">1036</span>     * @param readAttributes whether to call the filters with file attributes (false passes null).<a name="line.1036"></a>
<span class="sourceLineNo">1037</span>     * @param options the options to configure the walk.<a name="line.1037"></a>
<span class="sourceLineNo">1038</span>     * @return a filtered stream of paths.<a name="line.1038"></a>
<span class="sourceLineNo">1039</span>     * @throws IOException if an I/O error is thrown when accessing the starting file.<a name="line.1039"></a>
<span class="sourceLineNo">1040</span>     * @since 2.9.0<a name="line.1040"></a>
<span class="sourceLineNo">1041</span>     */<a name="line.1041"></a>
<span class="sourceLineNo">1042</span>    public static Stream&lt;Path&gt; walk(final Path start, final PathFilter pathFilter, final int maxDepth,<a name="line.1042"></a>
<span class="sourceLineNo">1043</span>        final boolean readAttributes, final FileVisitOption... options) throws IOException {<a name="line.1043"></a>
<span class="sourceLineNo">1044</span>        return Files.walk(start, maxDepth, options).filter(path -&gt; pathFilter.accept(path,<a name="line.1044"></a>
<span class="sourceLineNo">1045</span>            readAttributes ? readBasicFileAttributesUnchecked(path) : null) == FileVisitResult.CONTINUE);<a name="line.1045"></a>
<span class="sourceLineNo">1046</span>    }<a name="line.1046"></a>
<span class="sourceLineNo">1047</span><a name="line.1047"></a>
<span class="sourceLineNo">1048</span>    /**<a name="line.1048"></a>
<span class="sourceLineNo">1049</span>     * Does allow to instantiate.<a name="line.1049"></a>
<span class="sourceLineNo">1050</span>     */<a name="line.1050"></a>
<span class="sourceLineNo">1051</span>    private PathUtils() {<a name="line.1051"></a>
<span class="sourceLineNo">1052</span>        // do not instantiate.<a name="line.1052"></a>
<span class="sourceLineNo">1053</span>    }<a name="line.1053"></a>
<span class="sourceLineNo">1054</span><a name="line.1054"></a>
<span class="sourceLineNo">1055</span>}<a name="line.1055"></a>




























































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